I've had that happen a few times to me
They watch me, then when I watch them they unwatch me and block me XD

They haven't unwatched me yet

Makes me sad. I want to follow them and favorite their art but I can't

I've heard of this before - I wonder if perhaps it's some kind of anxiety reaction? When I was younger and I watched artists I really admired, I would panic and freak out inside if I saw they watched me or even if they commented on my art/stories, and I had no idea what to do because there'd suddenly be a huge onus on me to respond or somehow hold myself to this standard I'd set, and know they were watching.

It probably is an anxiety thing

thats dumb

I swear, when people do that they have some kind of brain damage or something.

I wouldn't go as far as to say that

thats incredibly strange